Calvin Banks was a city maintenance worker who was on an assignment in the Sewer when he made the mistake of stepping on a flatworm. The flatworm was part of a mutated colony, which was calling itself Wyrm. Wyrm smashed Banks to death with a giant mallet.

The New York Police Department had run a search for three days for Banks before calling it off. Banks, however, was married to the sister of Officer Maureen Lin, and she continued the search on her own. After being abducted by Wyrm herself, she found Calvin's smashed and bloodied helmet.